### Name: color.scale
### Title: Turn values into colors.
### Aliases: color.scale
### Keywords: misc

### ** Examples

 # go from green through yellow to red with no blue
 x<-rnorm(20)
 y<-rnorm(20)
 # use y for the color scale
 plot(x,y,col=color.scale(y,c(0,1,1),c(1,1,0),0),main="Color scale plot",
  pch=16,cex=2)



